ABAP Select data from SAP table /SAPAPO/CTM_MAT_IN_LOC into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SAPAPO/CTM_MAT_IN_LOC table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to /SAPAPO/CTM_MAT_IN_LOC. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the /SAPAPO/CTM_MAT_IN_LOC table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_/SAPAPO/CTM_MAT_IN_LOC TYPE STANDARD TABLE OF /SAPAPO/CTM_MAT_IN_LOC,
      WA_/SAPAPO/CTM_MAT_IN_LOC TYPE /SAPAPO/CTM_MAT_IN_LOC,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: </SAPAPO/CTM_MAT_IN_LOC> TYPE /SAPAPO/CTM_MAT_IN_LOC.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_/SAPAPO/CTM_MAT_IN_LOC.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SAPAPO/CTM_MAT_IN_LOC
  INTO TABLE IT_/SAPAPO/CTM_MAT_IN_LOC.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPAPO/CTM_MAT_IN_LOC
*  INTO TABLE @DATA(IT_/SAPAPO/CTM_MAT_IN_LOC2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_/SAPAPO/CTM_MAT_IN_LOC INDEX 1 INTO DATA(WA_/SAPAPO/CTM_MAT_IN_LOC2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SAPAPO/CTM_MAT_IN_LOC ASSIGNING </SAPAPO/CTM_MAT_IN_LOC>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPAPO/CTM_MAT_IN_LOC>-MATID = 1.
</SAPAPO/CTM_MAT_IN_LOC>-LOCID = 1.
</SAPAPO/CTM_MAT_IN_LOC>-MATNR = 1.
</SAPAPO/CTM_MAT_IN_LOC>-LOCNO = 1.
</SAPAPO/CTM_MAT_IN_LOC>-MEINS = 1.

ENDLOOP.

LOOP AT IT_/SAPAPO/CTM_MAT_IN_LOC INTO WA_/SAPAPO/CTM_MAT_IN_LOC.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPAPO/CTM_MAT_IN_LOC-BSTMI, sy-vline,
  WA_/SAPAPO/CTM_MAT_IN_LOC-BSTMA, sy-vline,
  WA_/SAPAPO/CTM_MAT_IN_LOC-BSTFE, sy-vline,
  WA_/SAPAPO/CTM_MAT_IN_LOC-BSTRF, sy-vline,
  WA_/SAPAPO/CTM_MAT_IN_LOC-AUSS, sy-vline,
  WA_/SAPAPO/CTM_MAT_IN_LOC-BESKZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPAPO/CTM_MAT_IN_LOC you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_/SAPAPO/CTM_MAT_IN_LOC TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_/SAPAPO/CTM_MAT_IN_LOC INTO WA_/SAPAPO/CTM_MAT_IN_LOC.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/CTM_MAT_IN_LOC-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/CTM_MAT_IN_LOC-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/CTM_MAT_IN_LOC-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/CTM_MAT_IN_LOC-MEINS.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_/SAPAPO/CTM_MAT_IN_LOC_STR, 
MATID TYPE STRING,
LOCID TYPE STRING,
MATNR TYPE STRING,
LOCNO TYPE STRING,
MEINS TYPE STRING,
BSTMI TYPE STRING,
BSTMA TYPE STRING,
BSTFE TYPE STRING,
BSTRF TYPE STRING,
AUSS TYPE STRING,
BESKZ TYPE STRING,
RRP_TYPE TYPE STRING,
PLIFZHORZ TYPE STRING,
GRPRT TYPE STRING,
GIPRT TYPE STRING,
SBDKZ TYPE STRING,
PRODHORZ TYPE STRING,
SHIPHORZ TYPE STRING,
CONHAP TYPE STRING,
CONHAP_OUT TYPE STRING,
KZKFG TYPE STRING,
CRITICAL_COMP TYPE STRING,
SHELF_LIFE_FLAG TYPE STRING,
SHELF_LIFE_DUR TYPE STRING,
MATURITY_DUR TYPE STRING,
SHLF_LFE_REQ_MIN TYPE STRING,
SHLF_LFE_REQ_MAX TYPE STRING,
MHDLP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPAPO/CTM_MAT_IN_LOC_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_/SAPAPO/CTM_MAT_IN_LOC_STR-MATID sy-vline 
WA_/SAPAPO/CTM_MAT_IN_LOC_STR-LOCID sy-vline 
WA_/SAPAPO/CTM_MAT_IN_LOC_STR-MATNR sy-vline 
WA_/SAPAPO/CTM_MAT_IN_LOC_STR-LOCNO sy-vline 
WA_/SAPAPO/CTM_MAT_IN_LOC_STR-MEINS sy-vline 
WA_/SAPAPO/CTM_MAT_IN_LOC_STR-BSTMI sy-vline 
WA_/SAPAPO/CTM_MAT_IN_LOC_STR-BSTMA sy-vline 
WA_/SAPAPO/CTM_MAT_IN_LOC_STR-BSTFE sy-vline 
WA_/SAPAPO/CTM_MAT_IN_LOC_STR-BSTRF sy-vline 
WA_/SAPAPO/CTM_MAT_IN_LOC_STR-AUSS sy-vline 
WA_/SAPAPO/CTM_MAT_IN_LOC_STR-BESKZ sy-vline 
WA_/SAPAPO/CTM_MAT_IN_LOC_STR-RRP_TYPE sy-vline 
WA_/SAPAPO/CTM_MAT_IN_LOC_STR-PLIFZHORZ sy-vline 
WA_/SAPAPO/CTM_MAT_IN_LOC_STR-GRPRT sy-vline 
WA_/SAPAPO/CTM_MAT_IN_LOC_STR-GIPRT sy-vline 
WA_/SAPAPO/CTM_MAT_IN_LOC_STR-SBDKZ sy-vline 
WA_/SAPAPO/CTM_MAT_IN_LOC_STR-PRODHORZ sy-vline 
WA_/SAPAPO/CTM_MAT_IN_LOC_STR-SHIPHORZ sy-vline 
WA_/SAPAPO/CTM_MAT_IN_LOC_STR-CONHAP sy-vline 
WA_/SAPAPO/CTM_MAT_IN_LOC_STR-CONHAP_OUT sy-vline 
WA_/SAPAPO/CTM_MAT_IN_LOC_STR-KZKFG sy-vline 
WA_/SAPAPO/CTM_MAT_IN_LOC_STR-CRITICAL_COMP sy-vline 
WA_/SAPAPO/CTM_MAT_IN_LOC_STR-SHELF_LIFE_FLAG sy-vline 
WA_/SAPAPO/CTM_MAT_IN_LOC_STR-SHELF_LIFE_DUR sy-vline 
WA_/SAPAPO/CTM_MAT_IN_LOC_STR-MATURITY_DUR sy-vline 
WA_/SAPAPO/CTM_MAT_IN_LOC_STR-SHLF_LFE_REQ_MIN sy-vline 
WA_/SAPAPO/CTM_MAT_IN_LOC_STR-SHLF_LFE_REQ_MAX sy-vline 
WA_/SAPAPO/CTM_MAT_IN_LOC_STR-MHDLP sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.